If you’re still using tapered wood screws instead of metal screws or drywall screws, then you might like taper point drills. The Fuller #8 Countersink Set includes five tapered drills for wood screw sizes 6, 8, 10, 12, and 14. Each drill has a countersink (1/2″ dia. for sizes 10, 12, and 14; 3/8″ dia. for sizes 6 and 8 ) held in place by two hex screws. But wait, there’s more — if you call now, you will also get 1/2″ and 3/8″ plug cutters, 1/2″ and 3/8″ stop collars, and two hex wrenches in a nice milled wood storage case all for $80.
W.L. Fuller has many other products and other countersink sets including some with hex-shank bits and a quick-release chuck adapter, if you prefer that approach. (TM has previously noted the Jack Rabbit, which is a combination drill/countersink/bit adapter.) All of Fuller’s countersinks and bits are 100% made in the U.S.A.